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Design an improvement algorithm that starts with the solution from your heuristic in Q 1 and searches for a better solution. Provide a pseudo -
Design an improvement algorithm that starts with the solution from your heuristic in Q and
searches for a better solution. Provide a pseudocode of this algorithm.
Below is the heuristic of Q:
Step : Initialize
Start with an empty set of facilities and demand points.
Set the current best solution to the empty set.
Step : OnebyOne
For each demand point d do the following:
Choose the closest facility from the current best solution that has not been assigned to any demand point yet.
If the chosen facility is not assigned to any demand point, then:
Update the current best solution by adding the demand point d to the chosen facility.
Mark the chosen facility as assigned.
Step : Evaluate
Calculate the total distance between each demand point and its corresponding facility in the current best solution.
Step : Swap
For each demand point d do the following:
Compare the total distance of d with the current best solution.
If the total distance of d is smaller than the current best solution, then:
Swap the position of d and the facility that has the smallest total distance in the current best solution.
Step : Check Optimality
If all demand points are assigned to facilities and the total distance is minimized, then the current best solution is considered optimal.
Step : Iterate
Go back to Step and repeat the process until an optimal solution is found.
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